Why did Philip’s contemporaries call him Philip the Magnanimous?

Philip of Hesse, the landgrave of Hesse, was referred to by his contemporaries as "the Magnanimous" due to his warmhearted and generous nature as a sovereign.1

While he was a central figure in Protestantism and a fierce defender of the independence of German princes against Charles V, this specific epithet reflected his character in his later years as he focused on rebuilding his state, which had been ravaged by war and foreign occupation.12